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Title: Hydrodynamic modeling of the deconfinement phase transition in heavy-ion collisions in the NICA-FAIR energy domain

Abstract

We use (3 + 1) dimensional ideal hydrodynamics to describe the space-time evolution of strongly interacting matter created in Au + Au and Pb + Pb collisions. The model is applied for the domain of bombarding energies 1-160 GeV/nucleon which includes future NICA (Dubna) and FAIR (Darmstadt) experiments. Two equations of state are used, the first one corresponding to resonance hadron gas and the second one including the deconfinement phase transition. The initial state is represented by two Lorentz-boosted nuclei. Dynamic trajectories of matter in the central box of the system are analyzed. They can be well represented by a fast shock-wave compression followed by a relatively slow isentropic expansion. The parameters of collective flows and hadronic spectra are calculated under assumption of the isochronous freeze-out. It is shown that the deconfinement phase transition leads to broadening of proton rapidity distributions, increase of elliptic flows, and formation of the directed antiflow in the central rapidity region. These effects are most pronounced at bombarding energies around 10 GeV/nucleon, when the system spends the longest time in the mixed phase. From the comparison with three-fluid calculations we conclude that the transparency effects are not so important in central collisions at NICA-FAIR energiesmore » (below 30 GeV/nucleon).« less

Authors:
; ;  [1];  [2]
  1. National Research Center Kurchatov Institute, 123182 Moscow (Russian Federation)
  2. (Russian Federation)
Publication Date:
OSTI Identifier:
21596604
Resource Type:
Journal Article
Journal Name:
Physical Review. C, Nuclear Physics
Additional Journal Information:
Journal Volume: 84; Journal Issue: 1; Other Information: DOI: 10.1103/PhysRevC.84.014907; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0556-2813
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; ATOM-ATOM COLLISIONS; COLLISIONS; DISTRIBUTION; EQUATIONS OF STATE; EXPANSION; FOUR-DIMENSIONAL CALCULATIONS; GEV RANGE; GOLD; HEAVY ION REACTIONS; HYDRODYNAMICS; ISENTROPIC PROCESSES; LEAD; NUCLEI; PROTONS; RESONANCE; SHOCK WAVES; SIMULATION; SPACE-TIME; ATOM COLLISIONS; BARYONS; ELEMENTARY PARTICLES; ELEMENTS; ENERGY RANGE; EQUATIONS; FERMIONS; FLUID MECHANICS; HADRONS; MECHANICS; METALS; NUCLEAR REACTIONS; NUCLEONS; TRANSITION ELEMENTS

Citation Formats

Merdeev, A. V., Satarov, L. M., Mishustin, I. N., and Frankfurt Institute for Advanced Studies, D-60438 Frankfurt am Main, Germany and National Research Center Kurchatov Institute, 123182 Moscow. Hydrodynamic modeling of the deconfinement phase transition in heavy-ion collisions in the NICA-FAIR energy domain. United States: N. p., 2011. Web. doi:10.1103/PHYSREVC.84.014907.
Merdeev, A. V., Satarov, L. M., Mishustin, I. N., & Frankfurt Institute for Advanced Studies, D-60438 Frankfurt am Main, Germany and National Research Center Kurchatov Institute, 123182 Moscow. Hydrodynamic modeling of the deconfinement phase transition in heavy-ion collisions in the NICA-FAIR energy domain. United States. doi:10.1103/PHYSREVC.84.014907.
Merdeev, A. V., Satarov, L. M., Mishustin, I. N., and Frankfurt Institute for Advanced Studies, D-60438 Frankfurt am Main, Germany and National Research Center Kurchatov Institute, 123182 Moscow. Fri . "Hydrodynamic modeling of the deconfinement phase transition in heavy-ion collisions in the NICA-FAIR energy domain". United States. doi:10.1103/PHYSREVC.84.014907.
@article{osti_21596604,
title = {Hydrodynamic modeling of the deconfinement phase transition in heavy-ion collisions in the NICA-FAIR energy domain},
author = {Merdeev, A. V. and Satarov, L. M. and Mishustin, I. N. and Frankfurt Institute for Advanced Studies, D-60438 Frankfurt am Main, Germany and National Research Center Kurchatov Institute, 123182 Moscow},
abstractNote = {We use (3 + 1) dimensional ideal hydrodynamics to describe the space-time evolution of strongly interacting matter created in Au + Au and Pb + Pb collisions. The model is applied for the domain of bombarding energies 1-160 GeV/nucleon which includes future NICA (Dubna) and FAIR (Darmstadt) experiments. Two equations of state are used, the first one corresponding to resonance hadron gas and the second one including the deconfinement phase transition. The initial state is represented by two Lorentz-boosted nuclei. Dynamic trajectories of matter in the central box of the system are analyzed. They can be well represented by a fast shock-wave compression followed by a relatively slow isentropic expansion. The parameters of collective flows and hadronic spectra are calculated under assumption of the isochronous freeze-out. It is shown that the deconfinement phase transition leads to broadening of proton rapidity distributions, increase of elliptic flows, and formation of the directed antiflow in the central rapidity region. These effects are most pronounced at bombarding energies around 10 GeV/nucleon, when the system spends the longest time in the mixed phase. From the comparison with three-fluid calculations we conclude that the transparency effects are not so important in central collisions at NICA-FAIR energies (below 30 GeV/nucleon).},
doi = {10.1103/PHYSREVC.84.014907},
journal = {Physical Review. C, Nuclear Physics},
issn = {0556-2813},
number = 1,
volume = 84,
place = {United States},
year = {2011},
month = {7}
}